Averno, one of the top rudos for CMLL for the half decade, has signed a contract with WWE. Averno is joining the US promotion to resume his feud with Misitco (now Sin Cara) as an unmasked heel. The plan was for him to lose his mask to La Mascara at June 17th's Jucio Final, but plans may change as this news gets out. Multiple sources have confirmed to me both Averno's signing and hisimminentmask loss.
WWE has been unhappy with Sin Cara's matches so far. Atypically, they've sought to resolve this by bringing in more agreeable opponents for him to work with. The story I was told is WWE went to Sin Cara and asked him that if he could work with anyone in the world, who would he most like to work with. Obviously, he picked his long time rival (and probably close friend) Averno. WWE earlier had Averno in for a tryout last October, the same tryout Mistico and Diamante were at (and which Durango Kid helped set up), but decided not to sign him at that time. Things have changed, and Averno secretly signed with WWE during their last tour of Mexico.
It's worth noting this is not actually an expanded WWE raid of CMLL luchadors or lucha style wrestlers in general. They want Averno to fill a specific need. I do not believe this directly increases (or decreases) their chances of signing anyone else from Mexico. To put it simply, WWE signing Averno does not mean they're about to sign Fantasma or Sombra or anyone else.
This is also a big risk for Averno; he's coming in for a defined spot, but there may not be plans past that; compare Averno to Tyson Kidd, who works the style they WWE prefers, is very good at it, and is barely on their roster. Dropping your mask and going to WWE in hopes of a big push worked out for Alberto Del Rio, but not so much for Rey Ortiz. Since the plan is for him to work against Sin Cara, I expect he will be brought to the main roster quickly, and not go to FCW.
Should be interesting to see how this turns out.